Do the effects of Catapultae (Siege train) units stack?

[pantsukki]

Ie. is there a benefit in having multiple siege train units in the same army?

[Bohémond]

AFAIK, having multiple siege train increase the probabilty to make a breach. Each Siege Train provides Artillery combat points used by the engine.

Some information here ;

http://www.ageod.net/agewiki/Sieges_and_breaches

Regards

[Narwhal]

If I am not mistaken, there are 2 bonus given by the siege train :

- The "specific" +1 siege roll bonus given by the siege "trait". Does not stack
- The "common" bonus given by all artillery units to siege, +1 to the siege roll every 10 points of power. This stacks.